Oxidation of indole‐3‐acetic acid by peroxomonosulphate: A kinetic and mechanistic study | Zendy

Chandramohan G. | Zendy; Kalyanasundharam S. | Zendy; Renganathan R. | Zendy

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Oxidation of indole‐3‐acetic acid by peroxomonosulphate: A kinetic and mechanistic study

Author(s) -

Chandramohan G.,

Kalyanasundharam S.,

Renganathan R.

Publication year - 2002

Publication title -

international journal of chemical kinetics

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.341

H-Index - 68

eISSN - 1097-4601

pISSN - 0538-8066

DOI - 10.1002/kin.10060

Subject(s) - chemistry , acetonitrile , kinetics , acetic acid , ionic strength , indole test , reactivity (psychology) , indole 3 acetic acid , aqueous solution , polymerization , first order , reaction rate , kinetic energy , medicinal chemistry , organic chemistry , biochemistry , catalysis , medicine , physics , alternative medicine , mathematics , pathology , quantum mechanics , auxin , gene , polymer

Kinetics of oxidation of indole‐3‐acetic acid (IAA) by peroxomonosulphate (PMS) in aqueous acetonitrile medium has been investigated. The reaction follows a total second order, first order each with respect to [IAA] and [PMS]. The rate of the reaction was not affected by added [H + ]. Variation of ionic strength (μ) had no influence on the rate. Increase of percentage of acetonitrile decreased the rate. Absence of any polymerization indicated a nonradical pathway. Activation and thermodynamic parameters have been computed. A suitable kinetic scheme based on these observations is proposed. The reactivity of PMS towards IAA was found to be higher than that with peroxodisulphate. © 2002 Wiley Periodicals, Inc. Int J Chem Kinet 34: 569–574, 2002

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